package comwyu.vegetablebirdcommuntiy.controller;

import comwyu.vegetablebirdcommuntiy.annotation.LoginRequired;
import comwyu.vegetablebirdcommuntiy.entity.User;
import comwyu.vegetablebirdcommuntiy.service.FollowService;
import comwyu.vegetablebirdcommuntiy.service.LikeService;
import comwyu.vegetablebirdcommuntiy.service.UserService;
import comwyu.vegetablebirdcommuntiy.util.CommunityConstant;
import comwyu.vegetablebirdcommuntiy.util.CommunityUtil;
import comwyu.vegetablebirdcommuntiy.util.HostHolder;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.multipart.MultipartFile;

import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.Map;

@Controller
@RequestMapping("/user")
public class UserController implements CommunityConstant {

    private static final Logger LOGGER = LoggerFactory.getLogger(UserController.class);

    @Value("${community.path.upload}")
    private String uploadPath;

    @Value("${community.path.domain}")
    private String domain;

    @Value("${server.servlet.context-path}")
    private String contextPath;

    @Autowired
    private UserService userService;

    @Autowired
    private HostHolder hostHolder;

    @Autowired
    private LikeService likeService;

    @Autowired
    private FollowService followService;

    @LoginRequired
    @GetMapping("setting")
    public String getSettingPage() {
        return "/site/setting";
    }
    /**
     * 头像上传
     *
     * @param headerImage
     * @param model
     * @return
     */
    @LoginRequired
    @PostMapping("/upload")
    public String upload(MultipartFile headerImage, Model model) {
        if (headerImage == null) {
            model.addAttribute("error", "您还没有选择图片！");
            return "/site/setting";
        }

        String fileName = headerImage.getOriginalFilename();
        String suffix = fileName.substring(fileName.lastIndexOf("."));
        if (StringUtils.isBlank(suffix)) {
            model.addAttribute("error", "图片格式不正确！");
            return "/site/setting";
        }
        // 生成随机的文件名
        fileName = CommunityUtil.generateUUID() + suffix;
        // 确认文件存放的路径
        File dest = new File(uploadPath + "/" + fileName);
        try {
            // 存储文件
            headerImage.transferTo(dest);
        } catch (IOException e) {
            LOGGER.error("上传文件失败: " + e.getMessage());
            throw new RuntimeException("上传文件失败,服务器发成异常", e);
        }

        // 更新当前用户的头像路径（web访问路径）
        // http://localhost:8080/community/user/header/xxxx.png
        User user = hostHolder.getUser();
        String headerUrl = domain + contextPath + "/user/header/" + fileName;
        userService.updateHeader(user.getId(), headerUrl);
        return "redirect:/index";

    }

    @GetMapping("/header/{fileName}")
    public void getHeader(@PathVariable("fileName") String fileName,
                          HttpServletResponse response) {
        // 服务器路径
        fileName = uploadPath + "/" + fileName;
        // 文件的后缀
        String suffix = fileName.substring(fileName.lastIndexOf("."));
        // 响应图片
        response.setContentType("image/" + suffix);

        try (
                ServletOutputStream os = response.getOutputStream();
                FileInputStream fis = new FileInputStream(fileName);
        ) {
            byte[] buffer = new byte[1024];
            int b = 0;
            while ((b = fis.read(buffer)) != -1) {
                os.write(buffer, 0, b);
            }

        } catch (IOException e) {
            LOGGER.error("读取头像失败" + e.getMessage());
        }
    }

    @PostMapping("/updatePassword")
    public String updatePassword(Model model, String oldPassword, String newPassword, String checkPassword) {

        User user = hostHolder.getUser();
        Map<String, Object> map = userService.updatePassword(user, oldPassword, newPassword, checkPassword);
        if (map == null || map.isEmpty()) {
            return "redirect:/index";
        } else {
            model.addAttribute("oldPasswordMsg", map.get("oldPassword"));
            model.addAttribute("newPasswordMsg", map.get("newPassword"));
            model.addAttribute("checkPasswordMsg", map.get("checkPassword"));
            return "/site/setting";
        }

    }


    // 个人主页
    @GetMapping("/profile/{userId}")
    public String getProfilePage(@PathVariable("userId") int userId, Model model){
        User user = userService.findUserById(userId);
        if (user == null) {
            throw new RuntimeException("该用户不存在");
        }

        // 用户
        model.addAttribute("user",user);
        // 点赞数量
        int likeCount = likeService.findUserLikeCount(userId);

        model.addAttribute("likeCount",likeCount);


        // 关注数量
        long followeeCount = followService.findFolloweeCount(userId, ENTITY_TYPE_USER);
        model.addAttribute("followeeCount",followeeCount);
        // 粉丝数量
        long followerCount = followService.findFollowerCount(ENTITY_TYPE_USER, userId);
        model.addAttribute("followerCount",followerCount);
        // 是否已关注
        boolean hasFollowed = false;
        if (hostHolder.getUser() != null) {
            hasFollowed = followService.hasFollowed(hostHolder.getUser().getId(),ENTITY_TYPE_USER,userId);
        }
        model.addAttribute("hasFollowed",hasFollowed);

        return "/site/profile";
    }

}
